EasyMock-동작 확인

EasyMock은 모의 사용 여부를 확인할 수 있습니다. 그것은 사용하여 이루어집니다verify()방법. 다음 코드 스 니펫을 살펴보십시오.

//activate the mock
EasyMock.replay(calcService);

//test the add functionality
Assert.assertEquals(mathApplication.add(10.0, 20.0),30.0,0);

//verify call to calcService is made or not
EasyMock.verify(calcService);

EasyMock.Verify ()가없는 예

Step 1: Create an interface called CalculatorService to provide mathematical functions

파일 : CalculatorService.java

public interface CalculatorService {
   public double add(double input1, double input2);
   public double subtract(double input1, double input2);
   public double multiply(double input1, double input2);
   public double divide(double input1, double input2);
}

Step 2: Create a JAVA class to represent MathApplication

파일 : MathApplication.java

public class MathApplication {
   private CalculatorService calcService;

   public void setCalculatorService(CalculatorService calcService){
      this.calcService = calcService;
   }
   
   public double add(double input1, double input2){
      //return calcService.add(input1, input2);
      return input1 + input2;
   }
   
   public double subtract(double input1, double input2){
      return calcService.subtract(input1, input2);
   }
   
   public double multiply(double input1, double input2){
      return calcService.multiply(input1, input2);
   }
   
   public double divide(double input1, double input2){
      return calcService.divide(input1, input2);
   }
}

Step 3: Test the MathApplication class

CalculatorService의 모의를 삽입하여 MathApplication 클래스를 테스트 해 보겠습니다. Mock은 EasyMock에서 생성됩니다.

파일 : MathApplicationTester.java

import org.easymock.EasyMock;
import org.easymock.EasyMockRunner;
import org.easymock.Mock;
import org.easymock.TestSubject;

import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;

// @RunWith attaches a runner with the test class to initialize the test data
@RunWith(EasyMockRunner.class)
public class MathApplicationTester {
	
   // @TestSubject annotation is used to identify class which is going to 
         use the mock object
   @TestSubject
   MathApplication mathApplication = new MathApplication();

   //@Mock annotation is used to create the mock object to be injected
   @Mock
   CalculatorService calcService;

   @Test
   public void testAdd(){
      
      //add the behavior of calc service to add two numbers
      EasyMock.expect(calcService.add(10.0,20.0)).andReturn(30.00);

      //activate the mock
      EasyMock.replay(calcService);	
		
      //test the add functionality
      Assert.assertEquals(mathApplication.add(10.0, 20.0),30.0,0);

      //verify call to calcService is made or not
      //EasyMock.verify(calcService);
   }
}

Step 4: Execute test cases

TestRunner라는 Java 클래스 파일을 만듭니다. C:\> EasyMock_WORKSPACE 테스트 케이스를 실행합니다.

파일 : TestRunner.java

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class TestRunner {
   public static void main(String[] args) {
      Result result = JUnitCore.runClasses(MathApplicationTester.class);
      
      for (Failure failure : result.getFailures()) {
         System.out.println(failure.toString());
      }
      
      System.out.println(result.wasSuccessful());
   }
}

Step 5: Verify the Result

다음을 사용하여 클래스 컴파일 javac 다음과 같이 컴파일러 :

C:\EasyMock_WORKSPACE>javac Calculator Service.java Math Application.java Math Application Tester.java Test Runner.java

이제 테스트 러너를 실행하여 결과를 확인하십시오.

C:\EasyMock_WORKSPACE>java TestRunner

출력을 확인하십시오.

true

EasyMock.Verify () 예제

Step 1: Create an interface CalculatorService to provide mathematical functions

파일 : CalculatorService.java

public interface CalculatorService {
   public double add(double input1, double input2);
   public double subtract(double input1, double input2);
   public double multiply(double input1, double input2);
   public double divide(double input1, double input2);
}

Step 2: Create a JAVA class to represent MathApplication

파일 : MathApplication.java

public class MathApplication {
   private CalculatorService calcService;

   public void setCalculatorService(CalculatorService calcService){
      this.calcService = calcService;
   }
   
   public double add(double input1, double input2){
      //return calcService.add(input1, input2);
      return input1 + input2;
   }
   
   public double subtract(double input1, double input2){
      return calcService.subtract(input1, input2);
   }
   
   public double multiply(double input1, double input2){
      return calcService.multiply(input1, input2);
   }
   
   public double divide(double input1, double input2){
      return calcService.divide(input1, input2);
   }
}

Step 3: Test the MathApplication class

CalculatorService의 모의를 삽입하여 MathApplication 클래스를 테스트 해 보겠습니다. Mock은 EasyMock에서 생성됩니다.

파일 : MathApplicationTester.java

import org.easymock.EasyMock;
import org.easymock.EasyMockRunner;
import org.easymock.Mock;
import org.easymock.TestSubject;

import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;

// @RunWith attaches a runner with the test class to initialize the test data
@RunWith(EasyMockRunner.class)
public class MathApplicationTester {
	
   // @TestSubject annotation is used to identify class which is going to use the mock object
   @TestSubject
   MathApplication mathApplication = new MathApplication();

   //@Mock annotation is used to create the mock object to be injected
   @Mock
   CalculatorService calcService;

   @Test
   public void testAdd(){
      //add the behavior of calc service to add two numbers
      EasyMock.expect(calcService.add(10.0,20.0)).andReturn(30.00);

      //activate the mock
      EasyMock.replay(calcService);	
		
      //test the add functionality
      Assert.assertEquals(mathApplication.add(10.0, 20.0),30.0,0);

      //verify call to calcService is made or not
      EasyMock.verify(calcService);
   }
}

Step 4: Execute test cases

TestRunner라는 Java 클래스 파일을 만듭니다. C:\> EasyMock_WORKSPACE 테스트 케이스를 실행합니다.

파일 : TestRunner.java

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class TestRunner {
   public static void main(String[] args) {
      Result result = JUnitCore.runClasses(MathApplicationTester.class);
      
      for (Failure failure : result.getFailures()) {
         System.out.println(failure.toString());
      }
      
      System.out.println(result.wasSuccessful());
   }
}

Step 5: Verify the Result

다음을 사용하여 클래스 컴파일 javac 다음과 같이 컴파일러 :

C:\EasyMock_WORKSPACE>javac Calculator Service.java Math Application.java Math Application Tester.java Test Runner.java

이제 테스트 실행기를 실행하여 결과를 확인하십시오.

C:\EasyMock_WORKSPACE>java TestRunner

출력을 확인하십시오.

testAdd(MathApplicationTester): 
   Expectation failure on verify:
      CalculatorService.add(10.0, 20.0): expected: 1, actual: 0
false